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Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22/05/2024, 15:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
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Size
44KB
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MD5
8a017e8a4c4b2bd25bda9ea2a7ec6e46
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SHA1
aa328fdd3fe196e0e9703bb672bb1c6dcdd6e15d
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SHA256
bdf1501fabe86800db860a5af2929f11aae30530c56d5d6b648924170f0d4f5f
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SHA512
f11af9e8d149eb5f395794ca4571217d62faa9728e1f2feb98f580efb539d2e6c89848dd96923b0dc8025a24f00d1d81951d2c1d9de7b52aa6c46d8d3cac0782
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxX:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xy
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000d000000014909-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000d000000014909-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2884 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe 2884 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2212 wrote to memory of 2884 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe 28 PID 2212 wrote to memory of 2884 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe 28 PID 2212 wrote to memory of 2884 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe 28 PID 2212 wrote to memory of 2884 2212 2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2212 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2884
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD567c4ce5da9f55bcdf45e78664d972952
SHA16eacf2bb0e0a556d7a4c5d49692962a349d67a5f
SHA256a1decf4eb35aec29819e65d06661078f9d5bb3702d7a094f72b548f2a2ea11c0
SHA512d8a0ad31aaa7976abb0c3cbf631a0219fd6aa441dcb8b770d9a3d6fb8e93001a8e8f59d9b74a381cf5dc1bb146fa369f13d9eb3da9efab6f6b4c36899613f2de